<div class="modal" tabindex="-1" role="dialog">
    <div class="modal-dialog" style="width: 100px; height: 100px; position: absolute; top: 50%; left: 50%; margin-top: -50px; margin-left: -50px; padding: 10px;">
        <div class="modal-content">
            <div id="wait-spin" class="modal-body">
                &nbsp;
            </div>
        </div>
    </div>
</div>